Re: How does mechanical digestion differ from chemical digestion?

In physiological terms, mechanical digestion refers to the digestion that 
occurs as food is chewed in the mouth (broken into smaller pieces) or that 
occurs as food moves through the intestines (continual mixing).  Chemical 
digestion refers to the digestion that occurs from acids, bases and enzymes 
that are released into the digestive tract in response to food.  Chemical 
digestion is by far the more significant of the two, although foods are not 
totally digested without both.